| 1 | """Handles the Stacked GIT configuration files |
| 2 | """ |
| 3 | |
| 4 | __copyright__ = """ |
| 5 | Copyright (C) 2005, Catalin Marinas <catalin.marinas@gmail.com> |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License version 2 as |
| 9 | published by the Free Software Foundation. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | """ |
| 20 | |
| 21 | import os, re |
| 22 | from stgit import basedir |
| 23 | |
| 24 | class GitConfigException(Exception): |
| 25 | pass |
| 26 | |
| 27 | class GitConfig: |
| 28 | __defaults={ |
| 29 | 'stgit.autoresolved': 'no', |
| 30 | 'stgit.smtpserver': 'localhost:25', |
| 31 | 'stgit.smtpdelay': '5', |
| 32 | 'stgit.pullcmd': 'git-pull', |
| 33 | 'stgit.merger': 'diff3 -L current -L ancestor -L patched -m -E ' \ |
| 34 | '"%(branch1)s" "%(ancestor)s" "%(branch2)s" > "%(output)s"', |
| 35 | 'stgit.autoimerge': 'no', |
| 36 | 'stgit.keeporig': 'yes', |
| 37 | 'stgit.keepoptimized': 'no', |
| 38 | 'stgit.extensions': '.ancestor .current .patched', |
| 39 | 'stgit.shortnr': '5' |
| 40 | } |
| 41 | |
| 42 | __cache={} |
| 43 | |
| 44 | def __run(self, cmd, args=None): |
| 45 | """__run: runs cmd using spawnvp. |
| 46 | |
| 47 | Runs cmd using spawnvp. The shell is avoided so it won't mess up |
| 48 | our arguments. If args is very large, the command is run multiple |
| 49 | times; args is split xargs style: cmd is passed on each |
| 50 | invocation. Unlike xargs, returns immediately if any non-zero |
| 51 | return code is received. |
| 52 | """ |
| 53 | |
| 54 | args_l=cmd.split() |
| 55 | if args is None: |
| 56 | args = [] |
| 57 | for i in range(0, len(args)+1, 100): |
| 58 | r=os.spawnvp(os.P_WAIT, args_l[0], args_l + args[i:min(i+100, len(args))]) |
| 59 | if r: |
| 60 | return r |
| 61 | return 0 |
| 62 | |
| 63 | def get(self, name): |
| 64 | if self.__cache.has_key(name): |
| 65 | return self.__cache[name] |
| 66 | |
| 67 | stream = os.popen('git repo-config --get %s' % name, 'r') |
| 68 | value = stream.readline().strip() |
| 69 | stream.close() |
| 70 | if len(value) > 0: |
| 71 | pass |
| 72 | elif (self.__defaults.has_key(name)): |
| 73 | value = self.__defaults[name] |
| 74 | else: |
| 75 | value = None |
| 76 | |
| 77 | self.__cache[name] = value |
| 78 | return value |
| 79 | |
| 80 | def getall(self, name): |
| 81 | if self.__cache.has_key(name): |
| 82 | return self.__cache[name] |
| 83 | |
| 84 | stream = os.popen('git repo-config --get-all %s' % name, 'r') |
| 85 | values = [line.strip() for line in stream] |
| 86 | stream.close() |
| 87 | |
| 88 | self.__cache[name] = values |
| 89 | return values |
| 90 | |
| 91 | def getint(self, name): |
| 92 | value = self.get(name) |
| 93 | if value.isdigit(): |
| 94 | return int(value) |
| 95 | else: |
| 96 | raise GitConfigException, 'Value for "%s" is not an integer: "%s"' % (name, value) |
| 97 | |
| 98 | def set(self, name, value): |
| 99 | self.__run('git-repo-config', [name, value]) |
| 100 | |
| 101 | def sections_matching(self, regexp): |
| 102 | """Takes a regexp with a single group, matches it against all |
| 103 | config variables, and returns a list whose members are the |
| 104 | group contents, for all variable names matching the regexp. |
| 105 | """ |
| 106 | result = [] |
| 107 | stream = os.popen('git repo-config --get-regexp "^%s$"' % regexp, 'r') |
| 108 | for line in stream: |
| 109 | m = re.match('^%s ' % regexp, line) |
| 110 | if m: |
| 111 | result.append(m.group(1)) |
| 112 | stream.close() |
| 113 | return result |
| 114 | |
| 115 | config=GitConfig() |
| 116 | |
| 117 | def config_setup(): |
| 118 | global config |
| 119 | |
| 120 | # Set the PAGER environment to the config value (if any) |
| 121 | pager = config.get('stgit.pager') |
| 122 | if pager: |
| 123 | os.environ['PAGER'] = pager |
| 124 | # FIXME: handle EDITOR the same way ? |
| 125 | |
| 126 | class ConfigOption: |
| 127 | """Delayed cached reading of a configuration option. |
| 128 | """ |
| 129 | def __init__(self, section, option): |
| 130 | self.__section = section |
| 131 | self.__option = option |
| 132 | self.__value = None |
| 133 | |
| 134 | def __str__(self): |
| 135 | if not self.__value: |
| 136 | self.__value = config.get(self.__section + '.' + self.__option) |
| 137 | return self.__value |
| 138 | |
| 139 | |
| 140 | # cached extensions |
| 141 | __extensions = None |
| 142 | |
| 143 | def file_extensions(): |
| 144 | """Returns a dictionary with the conflict file extensions |
| 145 | """ |
| 146 | global __extensions |
| 147 | |
| 148 | if not __extensions: |
| 149 | cfg_ext = config.get('stgit.extensions').split() |
| 150 | if len(cfg_ext) != 3: |
| 151 | raise CmdException, '"extensions" configuration error' |
| 152 | |
| 153 | __extensions = { 'ancestor': cfg_ext[0], |
| 154 | 'current': cfg_ext[1], |
| 155 | 'patched': cfg_ext[2] } |
| 156 | |
| 157 | return __extensions |